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ClinicalTrials.gov public records Last synced Oct 24, 2026, 8:38 AM EDT

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Showing 1–24 of 99 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: C. Difficile Clear all
Completed Phase 3 Interventional Results available

Microbiota Restoration Therapy for Recurrent Clostridium Difficile Infection (PUNCH CD3-OLS)

NCT03931941
View directory record Official record
Conditions
Clostridium Difficile Infection, Infection, Communicable Diseases
Interventions
RBX2660
Drug
Lead sponsor
Rebiotix Inc.
Industry
Eligibility
18 Years and older
Enrollment
793 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
46
States / cities
Phoenix, Arizona • North Little Rock, Arkansas • Oxnard, California + 43 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2024 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 4 Interventional Results available

IVIG Versus Placebo for the Treatment of Patients With Severe C-Diff

NCT00177970
View directory record Official record
Conditions
Clostridium Difficile-associated Diarrhea (CDAD)
Interventions
intravenous immunoglobulin G (IVIG), Placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
4
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 25, 2016 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Not applicable Interventional

To Evaluate the Impact of SBI on C. Difficile in Hospitalized UC Patients

NCT02730325
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Serum-derived bovine immunoglobulin/protein isolate (SBI), Placebo
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
3
States / cities
Miami, Florida • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 18, 2021 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Not applicable Interventional Results available

Safety of Stool Transplant for Patients With Difficult to Treat C. Difficile Infection

NCT02770326
View directory record Official record
Conditions
C. Difficile Infection, Cancer
Interventions
Fecal Microbiota Transplantation (FMT)
Biological
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 8, 2025 · Synced Oct 24, 2026, 8:38 AM EDT
Completed No phase listed Observational

Rescue FMT with Bezlotoxumab for Recurrent C. Difficile Infection

NCT06669936
View directory record Official record
Conditions
Recurrent C. Difficile Infection
Interventions
Fecal microbiota transplantation ± bezlotoxumab
Drug
Lead sponsor
Alexander Khoruts
Other
Eligibility
18 Years to 100 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2024 · Synced Oct 24, 2026, 8:38 AM EDT
Recruiting Not applicable Interventional

Fecal Microbiota Transplantation for C Diff Infection

NCT01905709
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Human fecal matter
Biological
Lead sponsor
Englewood Hospital and Medical Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
1
States / cities
Englewood, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 13, 2025 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 2 Interventional

Safety and Efficacy of Multiple Daily Dosing of Oral LFF571 in Patients With Moderate Clostridium Difficile Infections

NCT01232595
View directory record Official record
Conditions
Moderate Clostridium Difficile Infection
Interventions
LFF571, Vancomycin (POC)
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 90 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
14
States / cities
Palm Desert, California • Bristol, Connecticut • Clearwater, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2020 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 2 Interventional

Probiotics for Clostridium Difficile Infection in Older Adults

NCT01680874
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

InPART RX - Epicenters

NCT07368660
View directory record Official record
Conditions
Hospital Infection, Standardized Antibiotic Prescribing Ratio (SAR)
Interventions
Messaging Hospitalists, Usual Care
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
169 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
4
States / cities
Atlanta, Georgia • Johns Creek, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 4 Interventional

Irritable Bowel Syndrome Evaluation and Treatment in Primary Care

NCT01641341
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Bifidobacterium infantis, Pancrelipase, Nitazoxanide, Placebo
Drug
Lead sponsor
American Academy of Family Physicians
Other
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
9
States / cities
Lomita, California • Leawood, Kansas • Baton Rouge, Louisiana + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Oct 24, 2026, 8:38 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Fecal Transplant for Relapsing C. Difficile Infection

NCT01703494
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Fecal Microbiota Transplantation, Sham Fecal Microbiota Transplantation
Biological
Lead sponsor
Colleen Kelly
Other
Eligibility
18 Years to 75 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
2
States / cities
The Bronx, New York • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 1, 2015 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 3 Interventional Results available

A Trial to Compare Xifaxan to Vancomycin for the Treatment of Clostridium Difficile-Associated Diarrhea (CDAD)

NCT00269399
View directory record Official record
Conditions
Clostridium Infections, Diarrhea
Interventions
Rifaximin (Xifaxan), Vancomycin
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
63
States / cities
Scottsdale, Arizona • Redlands, California • Longmont, Colorado + 54 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2019 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 4 Interventional Results available

Prevention of Recurrent Clostridium Difficile Infection (CDI) in Patients With Inflammatory Bowel Disease (IBD).

NCT04626947
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Ulcerative Colitis, Crohn Disease, C. Diff. Infections
Interventions
Bezlotoxumab
Biological
Lead sponsor
David Binion, MD
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 4 Interventional

Oral Vancomycin for Preventing Clostridium Difficile Recurrence

NCT03200093
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Oral Vancomycin, Placebo
Drug
Lead sponsor
Rochester General Hospital
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 26, 2021 · Synced Oct 24, 2026, 8:38 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Bacillus Velezensis DSM 33864 for Reduction of the Risk of Recurrent Clostridioides Difficile Infections

NCT05606159
View directory record Official record
Conditions
Clostridium Difficile Infection Recurrence
Interventions
Bacillus velezensis DSM 33864, Placebo
Dietary Supplement
Lead sponsor
Novozymes A/S
Industry
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 22, 2024 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 4 Interventional

Probiotics to Prevent Severe Pneumonia and Endotracheal Colonization Trial

NCT02462590
View directory record Official record
Conditions
Ventilator Associated Pneumonia, Infections, C-Difficile, Antibiotic-associated Diarrhea, Diarrhea
Interventions
L. rhamnosus GG - Probiotic, Placebo - Microcrystalline Cellulose
Drug
Lead sponsor
McMaster University
Other
Eligibility
18 Years and older
Enrollment
2,650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
2
States / cities
Rochester, Minnesota • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 17, 2020 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Stool Transplant in Pediatric Patients With Recurring C. Difficile Infection

NCT01972334
View directory record Official record
Conditions
Clostridium Difficile Colitis
Interventions
FMT, placebo
Biological
Lead sponsor
MemorialCare Health System
Other
Eligibility
1 Year to 21 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 1, 2016 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 3 Interventional

A Study of GT267-004 Versus Vancomycin and GT267-004 Versus Metronidazole in Patients With C.Difficile - Associated Diarrhea

NCT00106509
View directory record Official record
Conditions
Clostridium Enterocolitis, Pseudomembranous Colitis
Interventions
tolevamer potassium-sodium (GT267-004)
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
520 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
99
States / cities
Phoenix, Arizona • Rogers, Arkansas • Burbank, California + 81 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2015 · Synced Oct 24, 2026, 8:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase I Trial of a Single Dose of CRS3123

NCT01551004
View directory record Official record
Conditions
Clostridium Difficile Colitis
Interventions
CRS3123, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 25, 2017 · Synced Oct 24, 2026, 8:38 AM EDT
Completed No phase listed Observational

Fecal Microbiota Transplantation (FMT) in Clostridium Difficile Infection (CDI) Not Responding to Antibiotics

NCT03117582
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Stool specimen
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
1 Year to 99 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 28, 2022 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Fecal Microbiota Transplant for Primary CDI

NCT03795233
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
Fecal microbiota transplant G3 capsules, Oral Vancomycin alone
Biological · Other
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 15, 2021 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 1 Interventional

A Study of Safety of PBCLN-003 Following Antibiotic Therapy in Subjects With C.Difficile-associated Diarrhea

NCT03793686
View directory record Official record
Conditions
Clostridium Difficile Diarrhea
Interventions
PBCLN-003, Placebo
Drug
Lead sponsor
Prolacta Bioscience
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Idaho Falls, Idaho
Source: ClinicalTrials.gov public record
Updated Oct 19, 2020 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 2 Interventional Results available

FMT Versus Antimicrobials for Initial Treatment of Recurrent CDI

NCT02255305
View directory record Official record
Conditions
Clostridium Difficile Infection
Interventions
FMT, Antimicrobials
Biological · Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 3, 2023 · Synced Oct 24, 2026, 8:38 AM EDT
Terminated Phase 2Phase 3 Interventional

Whey Protein Concentrate 40% Made of Milk of Immunized Cows to Aid in the Prevention of Relapse of Clostridium Difficile-Diarrhea

NCT00177775
View directory record Official record
Conditions
Positive C-Diff Culture
Interventions
MucoMilk product
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 17, 2008 · Synced Oct 24, 2026, 8:38 AM EDT